| Achievement | How to unlock
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| A New Dawn (10 points) | Completed Mission 14.
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| All for One (40 points) | Completed every co-op Mission on Heroic difficulty.
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| Argent Moon (10 points) | Completed Mission 2.
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| Benchwarmer (10 points) | Spectated a game.
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| Breakthrough (10 points) | Completed Mission 10.
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| Bringing in the Big Guns (10 points) | Called in a REQ that costs 5 Energy or more.
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| Castle Crasher (20 points) | Completed 5 matchmade games of Strongholds.
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| Civil War (10 points) | Completed Mission 12.
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| Conspiracy Theory (10 points) | Found and claimed one piece of Intel.
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| Cry Havoc (10 points) | Completed 3 matchmade games of Warzone.
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| Death from Above (10 points) | Killed a Grunt and smashed a grate with a Ground Pound in Battle of Sunaion.
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| Double Stuff (10 points) | Simultaneously destroyed 2 cores in Guardians on Heroic difficulty.
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| Emergency Boarding Procedures (10 points) | Escaped the doomed Kraken by jumping onto a Phaeton piloted by a Spartan.
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| Enemy of my Enemy (10 points) | Helped the Elite General charge the hill in Osiris on Heroic difficulty.
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| Escape (10 points) | Completed Mission 6.
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| Fire Drill (10 points) | Finished Evacuation within 18:00 without dying on Heroic difficulty.
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| Flag Monger (20 points) | Completed 5 matchmade games of Capture the Flag.
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| Forging a Legend (60 points) | Completed every Mission of the game on Legendary difficulty.
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| Gamemaster (10 points) | Created and saved a Custom Game.
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| Glasslands (10 points) | Completed Mission 3.
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| Go for the Gold (10 points) | Opened a Gold REQ Pack.
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| Going the Distance (10 points) | Completed Glassed without entering a vehicle.
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| Gravedigger (10 points) | Found and claimed a Skull.
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| Gravelord (40 points) | Found and claimed all Skulls.
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| Harbinger (10 points) | Completed The Breaking on Legendary difficulty without the entire fireteam dying.
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| Heroes Rise (40 points) | Completed every Mission of the game on Heroic difficulty.
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| Hunt the Truth (40 points) | Found and claimed all Intel.
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| I Thought I'd Lost You (10 points) | Escaped the Hunters in the lab and fought them in the hangar in Blue Team.
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| Icy Cool (10 points) | Used a Ground Pound on an exterior power core in Guardians on Heroic difficulty.
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| Into the Fire (10 points) | Completed Mission 1.
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| Kraken Lackin' (10 points) | Completed Enemy Lines without destroying a Kraken turret.
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| Legacy (10 points) | Completed every Mission of the game on Normal difficulty.
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| Lone Wolf (100 points) | Completed every Mission of the game by yourself on Legendary difficulty.
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| Make Your Mark (10 points) | Changed your Service Tag in the Spartan Hub.
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| Maverick (10 points) | Teamed up in a vehicle to kill 30 enemies in Unconfirmed co-op.
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| My Rules (20 points) | Completed any Mission with 3+ Skulls active on Heroic difficulty.
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| No Knock Raid (10 points) | Destroyed 10 walls or floors in Swords of Sanghelios.
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| No Witnesses (10 points) | Destroyed the Phantom at the Covenant camp in Reunion on Heroic difficulty.
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| Off to the Races (20 points) | Completed 5 matchmade games of Breakout.
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| Old Bones (10 points) | Completed Mission 9.
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| On My Mark (10 points) | Simultaneously assassinated two Elites in Blue Team co-op.
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| One for All (10 points) | Completed any co-op Mission on Heroic difficulty.
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| Preying Mantis (10 points) | Completed Swords of Sanghelios co-op with both Mantises on Heroic difficulty.
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| Prison Break (10 points) | Simultaneously killed two Wardens in The Breaking on Heroic difficulty.
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| Raise Your Banner (10 points) | Changed your Emblem in the Spartan Hub.
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| Reclamation (10 points) | Completed Mission 13.
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| Rolling Thunder (10 points) | Operated four different vehicles at once in Mission 13 on Heroic difficulty.
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| Roots of the Earth (10 points) | Completed Mission 4.
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| Savior (10 points) | Kept 6 miners alive at the elevator in Evacuation on Heroic difficulty.
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| Sentinels (10 points) | Completed Mission 15.
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| Shoot from the Hip (10 points) | Completed Glassed without any players using Smart-Link.
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| Spartan Decimation (20 points) | Completed 5 matchmade games of Slayer.
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| Stolen Gauntlet (10 points) | Completed Mission 5.
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| Stormbound (10 points) | Completed Mission 11.
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| Swords (10 points) | Completed Mission 8.
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| Take a Hike (10 points) | Traversed the canyon without a Phaeton in Reunion on Heroic difficulty.
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| Tank Still Beats Everything (10 points) | Finished the 13th mission without losing the Scorpion on Legendary difficulty.
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| Together Again (10 points) | Completed Mission 7.
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| Top of the Food Chain (30 points) | Killed a Legendary Boss in Warzone.
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| Valor Recognized (20 points) | Qualified for a Competitive Skill Rating.
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| Waiting on You (10 points) | Killed an enemy that's had its armor repaired in Unconfirmed.
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| Warlord (20 points) | Won a match on all three original Warzone maps.
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| Worms Don't Surf (10 points) | Knocked two Hunters into the ocean during the Battle of Sunaion.
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| Your Style (10 points) | Changed your Spartan's gear in the Spartan Hub.
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| Your Team is Your Weapon (10 points) | Commanded your team of Spartans in Osiris.
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